Whatnot is looking to grow its seller base by enabling them to turn their hobbies into businesses. The Seller Growth Platform pod is responsible for ensuring this growth is sustainable, trustworthy, and scalable by building systems that protect the funnel from fraud and abuse, balance growth with trust and safety, build platform intelligence, create scalable infrastructure, and drive long-term seller success.
Requirements
- Experience building scalable systems (we primarily use Python, Elixir, JavaScript).
- Ability to work across the stack (backend and frontend).
- Knowledge of data and growht systems like notifications.
- Scalability and data pipeline experience with SQL, dbt, etc.
- 5+ years of software engineering experience
Responsibilities
- Developing and scaling systems for identity verification (IDV), fraud detection, and automated trust/risk reviews that safeguard buyers while minimizing friction for good sellers.
- Ensuring that the thousands of new sellers joining weekly can sell successfully without degrading the buyer experience, while preventing bad actors from gaining distribution or abusing incentives.
- Powering accurate seller identification (e.g., enrichment data, signals, and predictive LTV models) to route sellers to the right onboarding, incentive, and discovery paths.
- Partnering with Data Science and Trust teams to design reusable trust and reputation systems, modular fraud prevention frameworks, and experimentation platforms that other pods and teams across Whatnot can leverage.
- Enabling better bucketing of sellers by value and risk profile, ensuring that high-potential sellers are accelerated early, while low-quality or fraudulent sellers are contained before they reach scale.
- Designing and building the systems that sit at the heart of the new seller funnel.
- Working with deeply technical systems (IDV, fraud signal repositories, seller enrichment pipelines, predictive models) that directly influence GMV, seller retention, and buyer trust.
Other
- Excellent product instincts. You first think about users rather than the best technical solution.
- Proven track record of delivering features. You are known for shipping products and features lightning-fast.
- Ability to take ownership of an ambiguous area and define and then drive impact.
- Ability to flexibly work across multiple workstreams, thriving in a fast-paced environment.
- Low ego, a growth mindset, and leaning into action and high impact.
